EP 1593086 B1 20070509 - System comprising a sigma-delta modulator for generating a digital representation of a quotient (P-Q)/(P+Q)
Title (en)
System comprising a sigma-delta modulator for generating a digital representation of a quotient (P-Q)/(P+Q)
Title (de)
System mit einem Sigma-Delta-Modulator zur Erzeugung einer digitalen Darstellung eines Quotienten (P-Q)/(P+Q)
Title (fr)
Système comprenant un modulateur sigma-delta pour la génération d'une représentation numérique d'un quotient (P-Q)/(P+Q)
Publication
Application
Priority
- IB 2004050082 W 20040206
- EP 03100250 A 20030206
- EP 04708842 A 20040206
Abstract (en)
[origin: WO2004070951A2] A servo system comprising an analog sigma delta modulator for generating a normalized digital error correction signal from first and second analog control signals. The sigma delta modulator comprises an analog low-pass filter, a quantizer delivering the digital error correction signal and a multiplying DA-converter in feedback arrangement between the output of the quantizer and the input of the low-pass filter for multiplying the feedback signals with the sum of the analog control signals.
IPC 8 full level
CPC (source: EP US)
G11B 7/0941 (2013.01 - EP US); G11B 7/094 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004070951 A2 20040819; WO 2004070951 A3 20041007; WO 2004070951 A8 20051117; AT E362142 T1 20070615; CN 1748220 A 20060315; DE 602004006381 D1 20070621; EP 1593086 A2 20051109; EP 1593086 B1 20070509; JP 2006523388 A 20061012; US 2006077075 A1 20060413; US 7046177 B2 20060516
DOCDB simple family (application)
IB 2004050082 W 20040206; AT 04708842 T 20040206; CN 200480003587 A 20040206; DE 602004006381 T 20040206; EP 04708842 A 20040206; JP 2006502566 A 20040206; US 54419905 A 20050802